.nav {
  width: 7.5rem;
  height: 2rem;
  position: fixed !important;
  bottom: 0 !important;
  left: 0 !important;
  z-index: 100 !important;
}

.nav .nav-btn {
  width: 100%;
  height: 100%;
  padding: 0 .4rem 0 .4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transform: translateY(-0.2rem);
}

.nav .nav-btn li {
  height: 1.28rem;
  width: .83rem;
  display: block;
  position: relative;
}

.nav .nav-btn li img {
  display: block;
  width: .83rem;
  height: .83rem;
}

.nav .nav-btn li span {
  display: inline-block;
  font-size: .28rem;
  height: .45rem;
  width: .83rem;
  text-align: center;
  color: white;
  position: absolute;
  bottom: 0;
}
